ATE276569T1 - Verbesserte subjektive qualität von sbr (spectral band replication)und hfr (high frequency reconstruction) kodierverfahren durch addieren von grundrauschen und begrenzung der rauschsubstitution - Google Patents
Verbesserte subjektive qualität von sbr (spectral band replication)und hfr (high frequency reconstruction) kodierverfahren durch addieren von grundrauschen und begrenzung der rauschsubstitutionInfo
- Publication number
- ATE276569T1 ATE276569T1 AT00904174T AT00904174T ATE276569T1 AT E276569 T1 ATE276569 T1 AT E276569T1 AT 00904174 T AT00904174 T AT 00904174T AT 00904174 T AT00904174 T AT 00904174T AT E276569 T1 ATE276569 T1 AT E276569T1
- Authority
- AT
- Austria
- Prior art keywords
- noise
- hfr
- high frequency
- sbr
- frequency reconstruction
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 3
- 230000000670 limiting effect Effects 0.000 title abstract 2
- 230000001976 improved effect Effects 0.000 title 1
- 230000010076 replication Effects 0.000 title 1
- 230000003595 spectral effect Effects 0.000 title 1
- 238000006467 substitution reaction Methods 0.000 title 1
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 230000003321 amplification Effects 0.000 abstract 1
- 238000009499 grossing Methods 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/028—Noise substitution, i.e. substituting non-tonal spectral components by noisy source
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/26—Pre-filtering or post-filtering
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/26—Pre-filtering or post-filtering
- G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/032—Quantisation or dequantisation of spectral components
- G10L19/035—Scalar quantisation
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Quality & Reliability (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Stereo-Broadcasting Methods (AREA)
- Networks Using Active Elements (AREA)
- Stereophonic System (AREA)
- Executing Machine-Instructions (AREA)
- Noise Elimination (AREA)
- Tires In General (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Building Environments (AREA)
- Road Paving Structures (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9900256A SE9900256D0 (sv) | 1999-01-27 | 1999-01-27 | Metod och anordning för förbättring av effektivitet och ljudkvalitet hos ljudkodare |
SE9903553A SE9903553D0 (sv) | 1999-01-27 | 1999-10-01 | Enhancing percepptual performance of SBR and related coding methods by adaptive noise addition (ANA) and noise substitution limiting (NSL) |
PCT/SE2000/000159 WO2000045379A2 (en) | 1999-01-27 | 2000-01-26 | Enhancing perceptual performance of sbr and related hfr coding methods by adaptive noise-floor addition and noise substitution limiting |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE276569T1 true ATE276569T1 (de) | 2004-10-15 |
Family
ID=26663489
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT05020588T ATE395688T1 (de) | 1999-01-27 | 2000-01-26 | Verfahren und vorrichtungen zur spektralbandreplikation und hochfrequenzen- rekonstruktion basierten audiokodierung mittels adaptivem addieren von grundrauschen und begrenzung der rauschsubstitution |
AT00904174T ATE276569T1 (de) | 1999-01-27 | 2000-01-26 | Verbesserte subjektive qualität von sbr (spectral band replication)und hfr (high frequency reconstruction) kodierverfahren durch addieren von grundrauschen und begrenzung der rauschsubstitution |
AT08000695T ATE449407T1 (de) | 1999-01-27 | 2000-01-26 | Vorrichtung und verfahren für die anpassung der spektralen hüllkurve eines hochfrequenzrekonstruierten signals |
AT08000694T ATE449406T1 (de) | 1999-01-27 | 2000-01-26 | Verfahren und vorrichtung für die dekodierung eines signals mittels spektralbandreplikation und interpolation von skalenfaktoren |
AT04000445T ATE311651T1 (de) | 1999-01-27 | 2000-01-26 | Verbesserung der perzeptuellen qualität von sbr (spektralbandreplikation) und hfr (hochfrequenzen-rekonstruktion) kodierverfahren mittels adaptivem addieren von grundrauschen und begrenzung der rauschsubstitution |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT05020588T ATE395688T1 (de) | 1999-01-27 | 2000-01-26 | Verfahren und vorrichtungen zur spektralbandreplikation und hochfrequenzen- rekonstruktion basierten audiokodierung mittels adaptivem addieren von grundrauschen und begrenzung der rauschsubstitution |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT08000695T ATE449407T1 (de) | 1999-01-27 | 2000-01-26 | Vorrichtung und verfahren für die anpassung der spektralen hüllkurve eines hochfrequenzrekonstruierten signals |
AT08000694T ATE449406T1 (de) | 1999-01-27 | 2000-01-26 | Verfahren und vorrichtung für die dekodierung eines signals mittels spektralbandreplikation und interpolation von skalenfaktoren |
AT04000445T ATE311651T1 (de) | 1999-01-27 | 2000-01-26 | Verbesserung der perzeptuellen qualität von sbr (spektralbandreplikation) und hfr (hochfrequenzen-rekonstruktion) kodierverfahren mittels adaptivem addieren von grundrauschen und begrenzung der rauschsubstitution |
Country Status (15)
Country | Link |
---|---|
US (11) | US6708145B1 (de) |
EP (5) | EP1914728B1 (de) |
JP (7) | JP3603026B2 (de) |
CN (6) | CN1258171C (de) |
AT (5) | ATE395688T1 (de) |
AU (1) | AU2585700A (de) |
BR (4) | BR122015007138B1 (de) |
DE (5) | DE60013785T2 (de) |
DK (5) | DK1914728T3 (de) |
ES (5) | ES2334404T3 (de) |
HK (6) | HK1053534A1 (de) |
PT (4) | PT1157374E (de) |
RU (1) | RU2226032C2 (de) |
SE (1) | SE9903553D0 (de) |
WO (1) | WO2000045379A2 (de) |
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